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ENGINE VALVE RESTORATION CARBIDE TIPPED SEAT CUTTERS KIT + 8 GUIDE STEMS BOXED

ENGINE VALVE RESTORATION CARBIDE TIPPED SEAT CUTTERS KIT + 8 GUIDE STEMS BOXED

$160.99$80.50

Complete Ultimate STEM Electronic Projects Starter Kit for Arduino with Mega2...

Complete Ultimate STEM Electronic Projects Starter Kit for Arduino with Mega2...

$200.52$100.26

Engine Building Set - STEM Remote Control Toy for Kids & Adults

Engine Building Set - STEM Remote Control Toy for Kids & Adults

$131.95$65.97

NEW Overhaul Rebuild Kit For Isuzu 3LD1 Engine STD

NEW Overhaul Rebuild Kit For Isuzu 3LD1 Engine STD

$322.05$161.03

Engine Building Kit, Kids Mechanic Toys for Motorcycle Engine Toy, STEM Engine

Engine Building Kit, Kids Mechanic Toys for Motorcycle Engine Toy, STEM Engine

$41.21$20.61

Stem Building Kit Engineering & Robotics Erector By Meccano Supercar 25-in-1

Stem Building Kit Engineering & Robotics Erector By Meccano Supercar 25-in-1

$32.95$16.48

Best Choice Products 4-in-1 Science Project Kit STEM & STEAM DIY Lab for Kids

Best Choice Products 4-in-1 Science Project Kit STEM & STEAM DIY Lab for Kids

$19.99$9.99

Crunch Labs by Mark Rober Magnus Flyer STEM Engineering Build Kit Ages 8+

Crunch Labs by Mark Rober Magnus Flyer STEM Engineering Build Kit Ages 8+

$44.99$22.50

Build Your Own Race Car Take Apart Toy Engineering Stem Project Kit For Kids

Build Your Own Race Car Take Apart Toy Engineering Stem Project Kit For Kids

$19.99$9.99

Engine Intake Exhaust Valve Seal Stem Kit For Honda CB250 Rebel 250 CA250 CMX250

Engine Intake Exhaust Valve Seal Stem Kit For Honda CB250 Rebel 250 CA250 CMX250

$26.99$13.49

Structural Engineering Bridges & Skyscrapers Stem Engineering Kit - New/ Sealed

Structural Engineering Bridges & Skyscrapers Stem Engineering Kit - New/ Sealed

$40.00$20.00

PicassoTiles Construction Building Engineering STEM Learning Toy Kit

PicassoTiles Construction Building Engineering STEM Learning Toy Kit

$15.99$8.00

STEM Kit from Joylabz, Educational Science Kits, 1000s of Engineering and Com...

STEM Kit from Joylabz, Educational Science Kits, 1000s of Engineering and Com...

$71.17$35.59

5 in 1 STEM Kits for Kids Age 8-10, Science Building Projects Craft for 8-12, Mo

5 in 1 STEM Kits for Kids Age 8-10, Science Building Projects Craft for 8-12, Mo

$35.97$17.98

6-in-1 STEM Kit for Kids Ages 6-12, Toys Boys 8-12, Robot...

6-in-1 STEM Kit for Kids Ages 6-12, Toys Boys 8-12, Robot...

$40.06$20.03

STEM Projects for Kids Ages 8-12 12-16, 6-In-1 Building Science STEM Kits for So

STEM Projects for Kids Ages 8-12 12-16, 6-In-1 Building Science STEM Kits for So

$38.99$19.50

Learning Resources Cycle Gears Building Construction Set STEM Toy Model Activity

Learning Resources Cycle Gears Building Construction Set STEM Toy Model Activity

$16.97$8.48

DPDSCVY STEM Scientific Handmade DIY Toy Kit Twin Engine Glide Aircraft NEW

DPDSCVY STEM Scientific Handmade DIY Toy Kit Twin Engine Glide Aircraft NEW

$15.99$8.00

THAMES & KOSMOS ARCHITECTURAL ENGINEERING STEM EXPERIMENT KIT 308 pcs NEW

THAMES & KOSMOS ARCHITECTURAL ENGINEERING STEM EXPERIMENT KIT 308 pcs NEW

$35.00$17.50

Top Race Stem Building Toys Building Excavator BLOCKS KIT 342 Pcs Ages 8+

Top Race Stem Building Toys Building Excavator BLOCKS KIT 342 Pcs Ages 8+

$9.89$4.95

Smithsonian Jet Works STEM Science Build Your Own Jet Engine Model Kit 49081 NIB

Smithsonian Jet Works STEM Science Build Your Own Jet Engine Model Kit 49081 NIB

$39.99$20.00

STEM Science Kits for Kids Ages 8-12 5-7, STEM Kits for Kids Ages 8-10, Wood Bui

STEM Science Kits for Kids Ages 8-12 5-7, STEM Kits for Kids Ages 8-10, Wood Bui

$29.07$14.54

Smithsonian Jet Works STEM Science Build Your Own Jet Engine Model Kit 49081 NIB

Smithsonian Jet Works STEM Science Build Your Own Jet Engine Model Kit 49081 NIB

$55.00$27.50

STEM Educational Playset with Screwdriver Tractor, Construction & Farm Animals

STEM Educational Playset with Screwdriver Tractor, Construction & Farm Animals

$24.99$12.49

Engine Building Kit, Kids Mechanic Toys for Motorcycle Engine Toy, STEM Engine M

Engine Building Kit, Kids Mechanic Toys for Motorcycle Engine Toy, STEM Engine M

$41.63$20.82

Brickyard Construction Engineering STEM Kit 163 Piece Educational Building...NEW

Brickyard Construction Engineering STEM Kit 163 Piece Educational Building...NEW

$29.99$14.99

SmartsToy 3D Wooden Ferris Wheel Motorized Model Kit STEM ENGINEERING

SmartsToy 3D Wooden Ferris Wheel Motorized Model Kit STEM ENGINEERING

$14.41$7.21

3D Wooden Ferris Wheel Stem Engineering Motorized Kit Ages 8-99

3D Wooden Ferris Wheel Stem Engineering Motorized Kit Ages 8-99

$15.99$8.00

13-in-1 STEM Kit Kids Toy for Boy Girl Teens Solar Robot FOR FUTURE ENGINEERS

13-in-1 STEM Kit Kids Toy for Boy Girl Teens Solar Robot FOR FUTURE ENGINEERS

$159.60$79.80

STEM Kit from Joylabz, Educational Science Kits, 1000s of Engineering and...

STEM Kit from Joylabz, Educational Science Kits, 1000s of Engineering and...

$83.56$41.78

12 in 1 Stem Year Old Building Block Stem Activities Projects Kit Kids age 4-8

12 in 1 Stem Year Old Building Block Stem Activities Projects Kit Kids age 4-8

$36.11$18.05

Premium STEM Building Kit for Kids Teens Robotics Solar Electric Motor Climbing

Premium STEM Building Kit for Kids Teens Robotics Solar Electric Motor Climbing

$119.60$59.80

Intro to Gears Kids First STEM Science Engineering Kit Thames & Kosmos 567018

Intro to Gears Kids First STEM Science Engineering Kit Thames & Kosmos 567018

$35.95$17.98

Engino Inventor STEM Engineer Structures Buildings Bridges Kit Various Lot Piece

Engino Inventor STEM Engineer Structures Buildings Bridges Kit Various Lot Piece

$17.99$8.99

Engino Discovering Stem Mechanics Levers Linkages & Structures Building Kit Toy

Engino Discovering Stem Mechanics Levers Linkages & Structures Building Kit Toy

$14.99$7.50

The Big Engineering Makerspace STEM Experiment Kit Thames & Kosmos 628154

The Big Engineering Makerspace STEM Experiment Kit Thames & Kosmos 628154

$64.95$32.48

Brickyard Building Blocks STEM Toys Kit Educational Construction Engineering Set

Brickyard Building Blocks STEM Toys Kit Educational Construction Engineering Set

$10.99$5.50

Engino Discovering Stem Mechanics Levers/Linkages & Structures Building Kit D/B

Engino Discovering Stem Mechanics Levers/Linkages & Structures Building Kit D/B

$24.99$12.49

STEM Science Kits for Kids Ages 8-12 5-7, STEM Kits for Kids Ages 8-10, Wood Bui

STEM Science Kits for Kids Ages 8-12 5-7, STEM Kits for Kids Ages 8-10, Wood Bui

$33.23$16.61

Head Gasket Set For 2006-2009 Buick LaCrosse For 2006-2008 Pontiac Grand Prix

Head Gasket Set For 2006-2009 Buick LaCrosse For 2006-2008 Pontiac Grand Prix

$91.94$45.97

Engine Valve Stem Oil Seal Set-Exhaust Valve Kit ITM SS268

Engine Valve Stem Oil Seal Set-Exhaust Valve Kit ITM SS268

$9.72$4.86

Tamiya Centipede Robot Model Kit 70230 Educational Series # 230 Engineering STEM

Tamiya Centipede Robot Model Kit 70230 Educational Series # 230 Engineering STEM

$36.95$18.48

STEM Science Kits for Kids Ages 8-12 5-7, STEM Kits for Kids Ages 8-10, Wood Bui

STEM Science Kits for Kids Ages 8-12 5-7, STEM Kits for Kids Ages 8-10, Wood Bui

$33.99$17.00

SWIVEL SNAPS Sky EXPLORERS Creativity Building Kit 130 Pcs Complete Set STEM NEW

SWIVEL SNAPS Sky EXPLORERS Creativity Building Kit 130 Pcs Complete Set STEM NEW

$29.99$14.99

National Geographic Ultimate Dinosaur Dig Kit Stem for Kids 8 years and up

National Geographic Ultimate Dinosaur Dig Kit Stem for Kids 8 years and up

$24.99$12.49

HEXBUG VEX ROBOTICS EXCAVATOR CONSTRUCTION KIT Building STEM STARTER Engineering

HEXBUG VEX ROBOTICS EXCAVATOR CONSTRUCTION KIT Building STEM STARTER Engineering

$24.00$12.00

STEM EDUCATIONAL 14-IN-1 KIT SOLAR ROBOT AGED 10 +

STEM EDUCATIONAL 14-IN-1 KIT SOLAR ROBOT AGED 10 +

$20.00$10.00

STEM Wooden Building Kit - Phonograph NEW Age 10+ FREE SHIPPING

STEM Wooden Building Kit - Phonograph NEW Age 10+ FREE SHIPPING

$13.60$6.80

STEM 12-in-1 Solar Robot Creation Kit With 190 Easy Build Pieces New

STEM 12-in-1 Solar Robot Creation Kit With 190 Easy Build Pieces New

$9.00$4.50

Kiwi Co Do It Yourself VORTEX LAB Chemistry & Kinetics STEM Kit Age 14+ NIB

Kiwi Co Do It Yourself VORTEX LAB Chemistry & Kinetics STEM Kit Age 14+ NIB

$30.39$15.20

VEVOR Fort Building Kit for Kid Glow in the Dark STEM Construction Toy 140 PCS

VEVOR Fort Building Kit for Kid Glow in the Dark STEM Construction Toy 140 PCS

$32.99$16.50

iQ Builder - Stem Educational Building Set

iQ Builder - Stem Educational Building Set

$14.00$7.00

3D Wooden Ferris Wheel Motorized Kit Model Stem Engineering New in Box

3D Wooden Ferris Wheel Motorized Kit Model Stem Engineering New in Box

$15.00$7.50

CircuitMess STEM Starter Kit, Chatter 2.0 Build/code your own walkie-texties

CircuitMess STEM Starter Kit, Chatter 2.0 Build/code your own walkie-texties

$34.99$17.50

V8 Engine Model Kit Build Your Own STEM Mini V8 Building Block Set Age 14+, 535P

V8 Engine Model Kit Build Your Own STEM Mini V8 Building Block Set Age 14+, 535P

$73.99$36.99

Engineering Makerspace Alien Robots STEM Experiment Kit 10 In 1 Models Motorized

Engineering Makerspace Alien Robots STEM Experiment Kit 10 In 1 Models Motorized

$18.99$9.49

For Yamaha YZ250 2008-2023 NICECNC Engine Kit Crankcase Cover Radiator Guard

For Yamaha YZ250 2008-2023 NICECNC Engine Kit Crankcase Cover Radiator Guard

$11.39$5.70

STEM Learning Original Educational Construction Engineering Building Blocks S...

STEM Learning Original Educational Construction Engineering Building Blocks S...

$50.72$25.36

Dr. STEM Toys V8 Model Engine Kit, Over 250 Pieces Includes Sounds Lights Read!

Dr. STEM Toys V8 Model Engine Kit, Over 250 Pieces Includes Sounds Lights Read!

$65.00$32.50

Build Your Own Speaker Radio Kit for Ages 8-15, STEM Circuit Engineering

Build Your Own Speaker Radio Kit for Ages 8-15, STEM Circuit Engineering

$40.99$20.50

Creative Metal Construction Kits: Stem Crane 75 Pieces

Creative Metal Construction Kits: Stem Crane 75 Pieces

$9.74$4.87

NEW!FULL SET Flower Bouquet 7 Stems Building Kit Botanical Collection 590 pieces

NEW!FULL SET Flower Bouquet 7 Stems Building Kit Botanical Collection 590 pieces

$20.11$10.05

STEM Kit Airplane Launcher Paper Airplane Engineering Kit for Kids Ages 12-14 Wo

STEM Kit Airplane Launcher Paper Airplane Engineering Kit for Kids Ages 12-14 Wo

$40.96$20.48

Engino Discovering Stem Mechanics Levers Linkages & Structures Building Kit New

Engino Discovering Stem Mechanics Levers Linkages & Structures Building Kit New

$5.49$2.75

Pynogeez Steam Build and Play 12 Models in One Stem Kit 152 Pieces Damage Box

Pynogeez Steam Build and Play 12 Models in One Stem Kit 152 Pieces Damage Box

$15.99$8.00

6-in-1 STEM Kit - Engineering Metal Truck, Airplane and Sports Car Excavator

6-in-1 STEM Kit - Engineering Metal Truck, Airplane and Sports Car Excavator

$56.56$28.28

4 Pack Engine Valve Stem Oil Seal Kit For Kawasaki FH FR FS FX Series 92049-7001

4 Pack Engine Valve Stem Oil Seal Kit For Kawasaki FH FR FS FX Series 92049-7001

$11.99$6.00

Stem Building Block Kit For Kids Ages 8 To 12 Educational Engineering Toy 150...

Stem Building Block Kit For Kids Ages 8 To 12 Educational Engineering Toy 150...

$36.99$18.50

Thames & Kosmos Architectural Engineering STEM Experiment Kit 26 Experiments

Thames & Kosmos Architectural Engineering STEM Experiment Kit 26 Experiments

$29.99$14.99

LAKESHORE STEM HYDRAULIC ENGINEERING KIT STEM - Brand New Sealed Unopened 126 ps

LAKESHORE STEM HYDRAULIC ENGINEERING KIT STEM - Brand New Sealed Unopened 126 ps

$45.00$22.50

Magnaflex Beach Set (22 pieces) Bendable Magnetic Building Set STEM

Magnaflex Beach Set (22 pieces) Bendable Magnetic Building Set STEM

$14.99$7.50

Smartivity Music Machine; Mechanical Action, Science, Engineering STEM and STEAM

Smartivity Music Machine; Mechanical Action, Science, Engineering STEM and STEAM

$67.95$33.98

Discovery Mindblown STEM Model Engine Kit w/ Moving Parts & LED Lights

Discovery Mindblown STEM Model Engine Kit w/ Moving Parts & LED Lights

$6.00$3.00

Mega Cyborg Hand STEM Experiment Kit Pneumatic & Hydraulic Technology. 4C

Mega Cyborg Hand STEM Experiment Kit Pneumatic & Hydraulic Technology. 4C

$15.37$7.68

Snap Circuits Beginner, Electronics Exploration Kit, Stem Kit for Ages 5-9 (S...

Snap Circuits Beginner, Electronics Exploration Kit, Stem Kit for Ages 5-9 (S...

$30.87$15.44

Erector by Meccano Roadster 5-in-1 Building Kit 18202 /STEM Engineering Toy

Erector by Meccano Roadster 5-in-1 Building Kit 18202 /STEM Engineering Toy

$18.50$9.25

4 in 1 STEM Kits for Kids Age 8-10, Science STEM Projects for Kids 8-12, 3D Puzz

4 in 1 STEM Kits for Kids Age 8-10, Science STEM Projects for Kids 8-12, 3D Puzz

$35.04$17.52

Smithsonian Motor-Works STEM 49013 4-Cylinder Engine Model Kit opened, but new

Smithsonian Motor-Works STEM 49013 4-Cylinder Engine Model Kit opened, but new

$11.99$6.00

UGEARS STEM LAB Wooden Pendulum Mechanical Model KIT

UGEARS STEM LAB Wooden Pendulum Mechanical Model KIT

$14.99$7.50

Stem Discovery Rocket Launch Kit

Stem Discovery Rocket Launch Kit

$15.00$7.50

MindWare SpinGineer Engineer Weld Build Engineering Kit Brainy Learning Toys 8+

MindWare SpinGineer Engineer Weld Build Engineering Kit Brainy Learning Toys 8+

$15.00$7.50

MECCANO 16303 ROADSTER RC METAL VEHICLE SET STEM KIT 2 MODELS 154 PCS NIB NEW

MECCANO 16303 ROADSTER RC METAL VEHICLE SET STEM KIT 2 MODELS 154 PCS NIB NEW

$19.36$9.68

Kinetic Machines Engineering Makerspace Stem Build Kit Science Math 5-in-1 Model

Kinetic Machines Engineering Makerspace Stem Build Kit Science Math 5-in-1 Model

$14.00$7.00

V8 Engine Model Kit Build Your Own STEM Mini V8 Model Engine Building Blocks Set

V8 Engine Model Kit Build Your Own STEM Mini V8 Model Engine Building Blocks Set

$79.99$39.99

10088 V8 Engine Model Kit Build Your Own STEM Mini V8 Model Engine Building Bloc

10088 V8 Engine Model Kit Build Your Own STEM Mini V8 Model Engine Building Bloc

$64.99$32.49

Horizon Group-Discovery Kids STEM Propulsion Rocket Kit 2018 - Sealed Mint New!

Horizon Group-Discovery Kids STEM Propulsion Rocket Kit 2018 - Sealed Mint New!

$9.99$5.00

STEM - Mechanical Master Military Transport Building Kit - 393 PCS

STEM - Mechanical Master Military Transport Building Kit - 393 PCS

$21.99$10.99

STEM Build and Learn Solar Robot Space Shuttle 6-In-1 Robot 12-In-1 Kit Bundle

STEM Build and Learn Solar Robot Space Shuttle 6-In-1 Robot 12-In-1 Kit Bundle

$39.97$19.98

DISCOVERY MINDBLOWN MODEL ENGINE KIT DIY STEM 104PCS FOUR CYLINDER MOVING KIT

DISCOVERY MINDBLOWN MODEL ENGINE KIT DIY STEM 104PCS FOUR CYLINDER MOVING KIT

$17.00$8.50

NEW Sealed Boxes Lot of 3 KiwiCo STEM Kits EUREKA Crates LANTERN, Lamp, Station

NEW Sealed Boxes Lot of 3 KiwiCo STEM Kits EUREKA Crates LANTERN, Lamp, Station

$46.89$23.45

Visible V8 Internal Combustion Ohc Engine Motor Working Model

Visible V8 Internal Combustion Ohc Engine Motor Working Model

$68.99$34.49

NEW!FULL SET Flower Bouquet 7 Stems Building Kit Botanical Collection 590 pieces

NEW!FULL SET Flower Bouquet 7 Stems Building Kit Botanical Collection 590 pieces

$20.99$10.49

STEM Kit from Joylabz, Educational Science Kits, 1000s of Engineering and

STEM Kit from Joylabz, Educational Science Kits, 1000s of Engineering and

$70.82$35.41

Educational Building Toys STEM Learning Kit, 10 in 1 Engineering series 1

Educational Building Toys STEM Learning Kit, 10 in 1 Engineering series 1

$36.67$18.34

| STEM Learning Toys | Creative Construction Engineering | Fun Educational Build

| STEM Learning Toys | Creative Construction Engineering | Fun Educational Build

$51.89$25.95

STEM kit Leonardo Da Vinci Bombard Cannon Engineering kit Educational Toys

STEM kit Leonardo Da Vinci Bombard Cannon Engineering kit Educational Toys

$42.93$21.46

CPI Stem Kit Plastic Stem fits Lifetime LF-1

CPI Stem Kit Plastic Stem fits Lifetime LF-1

$8.86$4.43

Thames & Kosmos Architectural Engineering STEM Experiment Kit 26 Experiments

Thames & Kosmos Architectural Engineering STEM Experiment Kit 26 Experiments

$14.99$7.50

Premium STEM Building Kit for Kids Teens Robotics Electric Motor Wireless Remote

Premium STEM Building Kit for Kids Teens Robotics Electric Motor Wireless Remote

$149.50$74.75

STEM Building Toys for Kids 6-10 - 50+ Mechanical Projects, DIY Engineering Kit

STEM Building Toys for Kids 6-10 - 50+ Mechanical Projects, DIY Engineering Kit

$45.59$22.80